Okay, it's not a bad tutorial, because it does teach you what he was aiming for. To make an image negative. Though he shows you the basics, it doesn't mean you can't make this into something more advanced. This 'simple' effect here could be brought onto astronomical levels where your animation could use this and make it seem perfectly fit for that situation.

What the hell is the point of Frame by Frame animating a colour effect? It's just a waste of time. FBF is better for movements. Quite why you people are even thinking of animating colour effects FBF I have no idea. The whole point of FBF in sprite animation is to make the movements smoother. How the hell are you going to apply that to an invert effect?

Krieg. Calm down. It's all by preference. There is no right way of doing it, so theres no need to justify your opinion on this. Although there are the benefits of tweening. Low file size, but that has nothing to do with satisfaction, and that's important for when you're animating with effects.

It's easier to ease sprites that way, and, for example, when a sprite jumps by tween, it looks sooooo wrong.

But by frame by frame, with the experience of spriting, and hopefully you can ease good, the sprite's jump would look realistic. Frame by frame is has become second nature to me.

Look how gay and faggoty that is, and sorry for my bad skewing.

I think THIS looks more natural.

Yeah I made that. Easing isn't perfect, and neither how Sonic projects himself but that looks more better than tweening, in my opinion.If you look HARD and compare those two, you will see, hmm... maybe a SLIGHT difference. :3.

LIEZ!!!! i do that same exact shit with tweening all tha time in all my vidz, fbf iz just too much work when i could just tween and ease n do tha same imo